JPS63107201A - Dielectirc filter - Google Patents
Dielectirc filterInfo
- Publication number
- JPS63107201A JPS63107201A JP62112436A JP11243687A JPS63107201A JP S63107201 A JPS63107201 A JP S63107201A JP 62112436 A JP62112436 A JP 62112436A JP 11243687 A JP11243687 A JP 11243687A JP S63107201 A JPS63107201 A JP S63107201A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- filter
- synthetic resin
- dielectric filter
- center conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 31
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 23
- 239000000057 synthetic resin Substances 0.000 claims abstract description 23
- 230000008878 coupling Effects 0.000 claims abstract description 18
- 238000010168 coupling process Methods 0.000 claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 claims abstract description 18
- 239000011368 organic material Substances 0.000 claims abstract description 10
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000008021 deposition Effects 0.000 abstract description 4
- 230000005672 electromagnetic field Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 230000007261 regionalization Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2056—Comb filters or interdigital filters with metallised resonator holes in a dielectric block
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Details Of Resistors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、セラミック材料からなる誘電体フィルタに係
り、特に、ＵＨＦ帯から比較的低周波のマイクロ波帯に
使用して好適な誘電体フィルタに関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a dielectric filter made of a ceramic material, and in particular to a dielectric filter suitable for use in the UHF band to relatively low frequency microwave band. It is related to.
（従来の技術）
従来、この種のフィルタとして′は、例えば、同一出願
人により出願された特願昭５９−２０１４５５号に示さ
れるものがある。(Prior Art) Conventionally, as a filter of this type, there is one shown in Japanese Patent Application No. 59-201455 filed by the same applicant.
以下、この種のフィルタについて、第３図を参照しなが
ら説明する。This type of filter will be explained below with reference to FIG.
第３図において、金属製のケース２１の両端には入力端
子１、出力端子２が設けられ、入力端子１は誘電体から
なる結合部を介して入力段の誘電体共振器３へ、出力端
子２は誘電体からなる結合部を介して出力段の誘電体共
振器４へそれぞれ接続され、入力段の誘電体共振器３と
出力段の誘電体共振器４間には股間の誘電体共振器５．
６． ７゜８が設けられ、各誘電体共振器の中心導体
から延長して誘電体端面にパターン１４．１６．１７．
１８．１９゜１５が設けられる。更に、段間の誘電体共
振器間には結合部９．１０．１１．１２．１３が設けら
れる。また、金属製の１２２は金属製のケース２１と接
合されるように構成されている。In FIG. 3, an input terminal 1 and an output terminal 2 are provided at both ends of a metal case 21, and the input terminal 1 is connected to the dielectric resonator 3 of the input stage via a dielectric coupling part, and is connected to the output terminal. 2 are respectively connected to the output stage dielectric resonator 4 via coupling parts made of a dielectric material, and a crotch dielectric resonator is connected between the input stage dielectric resonator 3 and the output stage dielectric resonator 4. 5.
6. 7°8 are provided, extending from the center conductor of each dielectric resonator to form patterns 14, 16, 17, .
18.19°15 is provided. Furthermore, coupling portions 9.10.11.12.13 are provided between the dielectric resonators between the stages. Further, the metal 122 is configured to be joined to the metal case 21.
フィルタを構成するには、一体構造の誘電体に複数個の
円柱又は円筒形状の中心導体を設け、誘電体共振器を構
成し、これらの誘電体共振器を用いフィルタを構成する
ために、誘電体共振器に対し、各共振周波数及び接合度
をＩＩ整し、金属製のケース２１と金属製の蓋２２によ
って密閉するようになっている。To construct a filter, a plurality of cylindrical or cylindrical center conductors are provided on a dielectric body having an integral structure to construct a dielectric resonator. The resonant frequencies and bonding degrees of the body resonators are adjusted to II, and the body resonators are sealed with a metal case 21 and a metal lid 22.
そこで、金属製のケース２１と金属製の蓋２２とは恒温
恒温雰囲気になるようにして、特性劣化を防止するため
に半田付は等により十分な気密を確保できるように接合
する必要がある。Therefore, the metal case 21 and the metal lid 22 need to be joined in a constant temperature atmosphere to ensure sufficient airtightness, such as by soldering, in order to prevent characteristic deterioration.
ここで、この誘電体フィルタの動作を簡単に説明する。Here, the operation of this dielectric filter will be briefly explained.
まず、入力端子１により印加された電気信号は一体構造
の誘電体内に設けられた入力段の誘電体共振器３により
電磁界を発生し、隣接の段間誘電体共振器５間に設定し
た結合部９を介して段間誘電体共振器５へ伝え、順次出
力側へ動作を繰り返しながら電気信号を段間誘電体共振
器８を経て出力段の誘電体共振器４に伝え、誘電体フィ
ルタの出力端子２に接続された負荷へ電気エネルギーを
供給する。各誘電体共振器の共振周波数は誘電体共振器
の高さ及び端面に設けられたパターンにより決定され、
結合部はパターン間の箇所であり、中心導体間の間隔及
びパターンの形状により結合度が決定されフィルタとし
て動作する。First, an electric signal applied through an input terminal 1 generates an electromagnetic field by an input stage dielectric resonator 3 provided in an integrally structured dielectric body, and a coupling is established between adjacent interstage dielectric resonators 5. The electrical signal is transmitted to the interstage dielectric resonator 5 via the interstage dielectric resonator 5 through the interstage dielectric resonator 8, and while repeating the operation sequentially to the output side, the electrical signal is transmitted to the output stage dielectric resonator 4 via the interstage dielectric resonator 8. Electrical energy is supplied to the load connected to the output terminal 2. The resonant frequency of each dielectric resonator is determined by the height of the dielectric resonator and the pattern provided on the end surface.
The coupling portion is a location between patterns, and the degree of coupling is determined by the spacing between center conductors and the shape of the pattern, and operates as a filter.
（発明が解決しようとする問題点）
しかしながら、上記構成のフィルタでは恒温恒湿雰囲気
になるようにして、特性劣化を防止するため、気密の良
い構造及び困難なケース間の接合作業を行う必要があり
、加工工数が多くなり、結局、高価なフィルタにならざ
るを得ないものであった。(Problem to be solved by the invention) However, in order to create a constant temperature and humidity atmosphere in the filter with the above configuration and prevent characteristic deterioration, it is necessary to create an airtight structure and perform difficult bonding work between the cases. However, the number of man-hours required for processing increases, and in the end, the filter has to be expensive.
本発明は、上記問題点を除去し、耐候性に優れ、特性が
安定で、しかも低コストの誘電体フィルタを提供するこ
とを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems and provide a dielectric filter that has excellent weather resistance, stable characteristics, and low cost.
（問題点を解決するための手段）
本発明は、上記問題点を解決するために、誘電体フィル
タにおいて、誘電体共振器の円筒形状の中心導体から延
長して端面に設けられたパターン間の結合部に対し、有
機材料を塗布し、その後加熱乾燥を行って、″４ｊＡ縁
被膜を形成し、周波数及び結合度の各調整を行って、耐
候性のある安価な誘電体フィルタを得るようにしたもの
である。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a dielectric filter in which a pattern is provided between the patterns extending from the cylindrical center conductor of the dielectric resonator and provided on the end face. An organic material is applied to the bonded portion, and then heated and dried to form a 4JA edge coating, and the frequency and degree of bonding are adjusted to obtain a weather-resistant and inexpensive dielectric filter. This is what I did.
（作用）
本発明によれば、誘電体共振器の円筒形状の中心導体か
ら延長し°て端面に設けられたパターン間の結合部に対
し、有機材料を塗布し、その後加熱乾燥を行うで、絶縁
被膜を形成し、周波数及び結合度の各調整を行うように
したので、耐候性に優れ、特性が安定化した、しかも安
価な誘電体フィルタを得ることができる。(Function) According to the present invention, an organic material is applied to the joint between the patterns extending from the cylindrical center conductor of the dielectric resonator and provided on the end face, and then heated and dried. Since an insulating film is formed and the frequency and degree of coupling are adjusted, it is possible to obtain an inexpensive dielectric filter with excellent weather resistance and stable characteristics.
（実施例）
以下、本発明の実施例について図面を参照しながら詳細
に説明する。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図は本発明の実施例を示す誘電体フィルタの斜視図
、第２図は本発明の実施例を示す誘電体フィルタの部分
断面図である。FIG. 1 is a perspective view of a dielectric filter showing an embodiment of the invention, and FIG. 2 is a partial sectional view of the dielectric filter showing an embodiment of the invention.
図中、３１は入力端子、３２は出力端子、３３乃至３８
はそれぞれセラミックからなる一体構造の誘電体共振器
、３９乃至４３は結合部、４４乃至４９はパターン、５
０は有機合成樹脂、５１は金属製のケース、５２は金属
製の蓋、５３は上面から底面まで延びる孔を有する円筒
形状の中心導体である。In the figure, 31 is an input terminal, 32 is an output terminal, 33 to 38
39 to 43 are coupling parts, 44 to 49 are patterns, and 5 are integrally structured dielectric resonators made of ceramic.
0 is an organic synthetic resin, 51 is a metal case, 52 is a metal lid, and 53 is a cylindrical center conductor having a hole extending from the top surface to the bottom surface.
ここで、有機合成樹脂５０は円筒形状の中心導体孔をラ
ンド状に逃げ全面塗布し絶縁膜が形成される。このよう
に誘電体共振器上に有機合成樹脂を塗布し、共振器を構
成する。Here, the organic synthetic resin 50 is applied over the entire surface of the cylindrical central conductor hole in the form of a land to form an insulating film. In this way, the organic synthetic resin is applied onto the dielectric resonator to form a resonator.
次に、係る誘電体フィルタの製造方法について説明する
。Next, a method for manufacturing such a dielectric filter will be explained.
一体構造の誘電体に孔を有する円筒状の中心導体５３を
設け、この中心導体から延長して誘電体端面にパターン
４４〜４９を設けて誘電体共振器を構成し、有機合成樹
脂５０としては、エポキシ系のレジストを用い、望まし
くは半田レジスト材料を用い、スクリーン印刷にて、１
０〜２０μｍの膜厚に印刷形成させ、大気中１５０℃３
０分間の加熱乾燥を行い、周波数及び結合度の調整を行
う。A cylindrical central conductor 53 having a hole is provided in a monolithic dielectric, and patterns 44 to 49 are provided on the end face of the dielectric extending from the central conductor to constitute a dielectric resonator. , using an epoxy resist, preferably a solder resist material, by screen printing.
Printed to a film thickness of 0 to 20 μm and heated at 150℃3 in the atmosphere.
Heat dry for 0 minutes and adjust the frequency and degree of bonding.
更に、調整を終えた誘電体共振器は、開放された金属製
のケース５１に半田付けによって固定し、次に、入出力
端子を半田付けによって接合し、しかる後、これらの誘
電体共振器の機械的保護を行うために、金属製の蓋５２
をして、誘電体フィルタを製造する。Further, the adjusted dielectric resonators are fixed to the open metal case 51 by soldering, and then the input and output terminals are joined by soldering. A metal lid 52 is provided for mechanical protection.
Then, a dielectric filter is manufactured.
更に、本発明の特徴である誘電体フィノにりの構成を第
４図及び第５図を用いて詳細に説明する。Furthermore, the structure of the dielectric filament, which is a feature of the present invention, will be explained in detail with reference to FIGS. 4 and 5.
誘電体フィルタ６０はセラミックからなる長方形の固体
形状ブロック６１を有している。そのブロック６１は並
列に６個の丸い孔６２〜６７を有し、その各々はブロッ
ク６１の上面から底面へと延びている。The dielectric filter 60 has a rectangular solid block 61 made of ceramic. The block 61 has six parallel round holes 62 to 67, each of which extends from the top surface of the block 61 to the bottom surface.
その孔６２〜６７の各々は、第５図に示すように、銀或
いは銅などの中心導体としての内面導体層６８で覆われ
る。また、ブロック６１の底面には焼成された銀や銅ベ
ーストなどの底面導体層７Ｂが設けられ、この導体層７
日でもって、底面において内面導体層６８と電気的に接
続される。更に、その底面導体層７８はブロック６１の
外側面に設けられる焼成された銀又は銅ベーストなどの
外側面導体層７９と接続されている。Each of the holes 62-67 is covered with an inner conductor layer 68 as a center conductor, such as silver or copper, as shown in FIG. Further, a bottom conductor layer 7B made of fired silver or copper base is provided on the bottom of the block 61.
It is then electrically connected to the inner conductor layer 68 at the bottom surface. In addition, the bottom conductor layer 78 is connected to an outer surface conductor layer 79, such as a fired silver or copper base, provided on the outer surface of the block 61.
一方、ブロック６１は導電パターン７０〜７５を有し、
その各々は長方形をしており、対応する孔の端面を取り
囲むようにブロック６１の上面に設けられ、それぞれ内
面導体層６８に接続される。これらの導電パターン７０
〜７５は隣接する誘電体共振器を結合するために電磁界
結合器として作用する。On the other hand, the block 61 has conductive patterns 70 to 75,
Each of them has a rectangular shape, is provided on the upper surface of the block 61 so as to surround the end surface of the corresponding hole, and is connected to the inner surface conductor layer 68, respectively. These conductive patterns 70
~75 acts as an electromagnetic coupler to couple adjacent dielectric resonators.
更に、この誘電体フィルタ６０は有機合成樹脂層８０、
望ましくはエポキシ樹脂を含むレジスト材料である半田
レジスト材料からなる層を有する。その有機合成樹脂層
８０は少な（とも導電パターン７０〜７５、入力及び出
力端子７６、７？、内面導体層６８、底面導体層７８及
び外側面導体層７９を除いた、露出した誘電体部分を覆
う、有機合成樹脂層８０は、第４図に示すように、入力
及び出力端子７６、７７及び導電パターン７０〜７５の
一部を覆うようにする。また、有機合成樹脂層は、誘電
体フィルタ６０の上面の全体を覆うようにしてもよい、
その有機合成樹脂層の形成は前記した通りである。なお
、誘電体共振器間或いは誘電体共振器と入出力端子間の
結合に比して結合の影響が少ない露出した誘電体の部分
、例えば、入出力端子と外側面導体層との間の露出した
誘電体の部分には有機合成樹脂層を堆積しなくても差し
支えない。Furthermore, this dielectric filter 60 includes an organic synthetic resin layer 80,
It preferably has a layer made of a solder resist material, which is a resist material containing an epoxy resin. The organic synthetic resin layer 80 has a small exposed dielectric portion (excluding conductive patterns 70 to 75, input and output terminals 76, 7?, inner conductor layer 68, bottom conductor layer 78 and outer conductor layer 79). The covering organic synthetic resin layer 80 covers input and output terminals 76, 77 and part of the conductive patterns 70 to 75, as shown in FIG. It may be made to cover the entire upper surface of 60.
The formation of the organic synthetic resin layer is as described above. Note that exposed parts of the dielectric where the influence of coupling is less than that between dielectric resonators or between a dielectric resonator and an input/output terminal, such as the exposed part between an input/output terminal and an outer surface conductor layer. There is no problem even if the organic synthetic resin layer is not deposited on the dielectric portion.
この誘電体フィルタ６０の共振周波数の調整操作及びこ
の結合度の調整は導電パターン７０〜７５のトリミング
によって行われる。その調整操作は有機合成樹脂層８０
の堆積前か、或いは、望ましくは、最終調整出来るよう
に、その堆積後に行われる。Adjustment of the resonant frequency of the dielectric filter 60 and adjustment of the degree of coupling are performed by trimming the conductive patterns 70 to 75. The adjustment operation is performed using the organic synthetic resin layer 80.
or, preferably, after the deposition to allow for final adjustments.
調整操作が・、有機合成樹脂層８０の堆積後に実施され
る場合には、そのフィルタは再び剥き出しの誘電体部分
を有することになるが、その剥き出しの部分は一般には
小さいので、無視し得る。その無視した結果として、そ
の誘電体フィルタの雰囲気に対する特性劣化の影響は小
さい。If the conditioning operation is carried out after the deposition of the organic synthetic resin layer 80, the filter will again have bare dielectric parts, but these are generally small and can be ignored. As a result of ignoring this, the influence of characteristic deterioration on the atmosphere of the dielectric filter is small.
必要に応じて、その再び剥き出しになった誘電体部分を
有機合成樹脂層の堆積により、覆うようにすることがで
きることは言うまでもない。It goes without saying that if necessary, the dielectric portion exposed again can be covered by depositing an organic synthetic resin layer.
このように構成するために、誘電体共振器は耐候性に優
れ、誘電体共振器の電磁界の伝播特性が変動することが
なく、特性が安定な誘電体フィルタを得ることができる
。Because of this configuration, the dielectric resonator has excellent weather resistance, and the electromagnetic field propagation characteristics of the dielectric resonator do not fluctuate, making it possible to obtain a dielectric filter with stable characteristics.
なお、この誘電体フィルタの動作そのものは、前記した
先行技術として示される誘電体フィルタの動作と同じで
あるので、説明は省略する。Note that the operation of this dielectric filter itself is the same as the operation of the dielectric filter shown as the prior art described above, so a description thereof will be omitted.
この誘電体フィルタを、環境試験の中において最も、挿
入損失劣化が生じる試験として相対湿度９０％、温度５
０℃の雰囲気を作り、その環境下にて試験を行った。This dielectric filter was tested at a relative humidity of 90% and a temperature of
An atmosphere of 0° C. was created and the test was conducted under that environment.
第６図はその耐候試験結果を示したものである。Figure 6 shows the results of the weather resistance test.
この試験によれば、本発明の誘電体フィルタにおいては
、挿入損失は２５℃条件下に比べ、５０℃。According to this test, in the dielectric filter of the present invention, the insertion loss was 50°C compared to 25°C.
９０％ＲＨ（相対湿度： Ｒｅ１ａｔｉｖｅ Ｈｕｍｉ
ｄｉｔｙ ）環境条件下でわずかな変動しか示さない。90%RH (relative humidity: Reactive Humi
dity) exhibits only small fluctuations under environmental conditions.
一方、有機合成樹脂の塗布を行わなかった従来例のもの
は、本発明のものに比べて、損失量が約２ｄＢ前後の変
動を来し、その変動値が大きい。On the other hand, in the case of the conventional example in which no organic synthetic resin was applied, the amount of loss fluctuated by about 2 dB compared to that of the present invention, and the fluctuation value was large.
そして、本発明の誘電体フィルタの特性は、気密ケーシ
ングなしでも安定している。The characteristics of the dielectric filter of the present invention are stable even without an airtight casing.
第７図は本発明の更なる他の実施例を示す誘電体フィル
タの斜視図である。FIG. 7 is a perspective view of a dielectric filter showing still another embodiment of the present invention.
この実施例においては、予め隣接した複数の誘電体共振
器８１〜８６を配置しておき、それらの誘電体共振器と
並設して導電パターン８８が形成された絶縁基板８７を
設け、それらの誘電体共振器の中心導体と前記導電パタ
ーンとを接続し、その導電パターン間で結合度の調整を
行うようにしたものである。つまり、誘電体共振器と調
整部が分離した構造をしている。この場合は、その導電
パターン８８が形成された絶縁基板８７上に有機合成樹
脂８９を塗布し、絶縁膜を形成する。この場合、少なく
とも導電パターン間に有機合成樹脂を塗布し、耐候性を
持たせるようにする。In this embodiment, a plurality of adjacent dielectric resonators 81 to 86 are arranged in advance, and an insulating substrate 87 on which a conductive pattern 88 is formed is provided in parallel with these dielectric resonators. The center conductor of the dielectric resonator and the conductive pattern are connected, and the degree of coupling is adjusted between the conductive patterns. In other words, it has a structure in which the dielectric resonator and the adjustment section are separated. In this case, an organic synthetic resin 89 is applied onto the insulating substrate 87 on which the conductive pattern 88 is formed to form an insulating film. In this case, an organic synthetic resin is applied at least between the conductive patterns to provide weather resistance.
また、複数の誘電体共振器は導電パターンを中心にして
両側に配置するなど種々の変形を行うことができる。要
は、誘電体共振器とは独立して設けられる導電パターン
間の結合度の調整部に有機合成樹脂８９を塗布し、絶縁
膜を形成するようにすればよい。Furthermore, various modifications can be made, such as arranging the plurality of dielectric resonators on both sides of the conductive pattern. In short, the organic synthetic resin 89 may be applied to a portion for adjusting the degree of coupling between conductive patterns provided independently of the dielectric resonator to form an insulating film.
この場合にも、前記したと同様の作用効果を奏すること
ができることは明らかである。It is clear that in this case as well, the same effects as described above can be achieved.
なお、本実施例では有機合成樹脂としてエポキシ系のレ
ジストを用い、印刷により形成するようにしたが、耐湿
性を有するものであれば、他のものでも良（、特に、こ
れにこだわるものではない。In this example, an epoxy resist was used as the organic synthetic resin and the resist was formed by printing, but other materials may be used as long as they are moisture resistant (although there is no particular limitation to this). .
かつ、形成方法も印刷方法だけではな（、スプレー浸漬
、筆塗り等の工法によっても行うようにしても良い。In addition, the forming method is not limited to the printing method (spray dipping, brush painting, etc.) may also be used.
また、この誘電体フィルタは、例えば、中心周波数８８
０ＭＨｚ帯にて、帯域幅約２０ＭＨｚのバンドパスフィ
ルタとして用いることができ、その詳細な各部の寸法は
、前記した特願昭５９−２０１４５５号に示されている
。Further, this dielectric filter has a center frequency of 88, for example.
It can be used as a bandpass filter with a bandwidth of about 20 MHz in the 0 MHz band, and the detailed dimensions of each part are shown in the above-mentioned Japanese Patent Application No. 59-201455.
なお、本発明は上記実施例に限定されるものではな（、
本発明の趣旨に基づいて種々の変形が可能であり、これ
らを本発明の範囲から排除するものではない。Note that the present invention is not limited to the above embodiments (
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.
（発明の効果）
以上、詳細に説明したように、本発明によれば、誘電体
共振器の周波数及び結合度パターン面に有機材料を塗布
し、絶縁被膜を形成するようにしたので、耐候性に優れ
、特性が安定化され、しかも安価な誘電体フィルタを得
ることができる。(Effects of the Invention) As described above in detail, according to the present invention, an organic material is applied to the frequency and coupling pattern surface of the dielectric resonator to form an insulating film, thereby improving weather resistance. It is possible to obtain a dielectric filter that has excellent properties, stable characteristics, and is inexpensive.
第１図は本発明の誘電体フィルタの斜視図、第２図は本
発明の誘電体フィルタの部分断面図、第３図は従来の誘
電体フィルタの斜視図、第４図は本発明の他の誘電体フ
ィルタの斜視図、第５図は第４図のＶ−Ｖ線断面図、第
６図は誘電体フィルタの耐候試験特性図、第７図は本発
明の更なる他の誘電体フィルタの斜視図である。
３１・・・入力端子、３２・・・出力端子、３３．３４
．３５．３６゜３７、３８・・・誘電体共振器、３９．
４０．４１．４２．４３・・・結合部、４４．４５．４
６．４７．４８．４９・・・パターン、５０・・・有機
合成樹脂、５１・・・金属製のケース、５２・・・金属
製の蓋、５３・・・中心導体。FIG. 1 is a perspective view of a dielectric filter of the present invention, FIG. 2 is a partial sectional view of a dielectric filter of the present invention, FIG. 3 is a perspective view of a conventional dielectric filter, and FIG. 4 is a perspective view of a dielectric filter of the present invention. 5 is a cross-sectional view taken along the line V-V in FIG. 4, FIG. 6 is a weather resistance test characteristic diagram of the dielectric filter, and FIG. 7 is a further dielectric filter of the present invention. FIG. 31...Input terminal, 32...Output terminal, 33.34
．． 35.36°37, 38...dielectric resonator, 39.
40.41.42.43...Joining part, 44.45.4
6.47.48.49 Pattern, 50 Organic synthetic resin, 51 Metal case, 52 Metal lid, 53 Center conductor.
Claims (11)
該中心導体に接続される結合パターンを設けると共に、
前記中心導体は前記誘電体で充たされた複数の一体構造
の誘電体共振器を構成し、該誘電体共振器上に有機材料
からなる絶縁被膜を形成するようにしたことを特徴とす
る誘電体フィルタ。(1) A center conductor is formed on a dielectric, and a coupling pattern connected to the center conductor is provided on the upper surface of the dielectric, and
The center conductor constitutes a plurality of integrated dielectric resonators filled with the dielectric, and an insulating film made of an organic material is formed on the dielectric resonators. body filter.
を有し、該孔の内面に形成される第１の導体層が前記底
面及び外側面に設けられた第２の導体層と接続されるこ
とを特徴とする特許請求の範囲第１項記載の誘電体フィ
ルタ。(2) The center conductor has a hole extending from the top surface to the bottom surface of the dielectric, and the first conductor layer formed on the inner surface of the hole is connected to the second conductor layer provided on the bottom surface and the outer surface. The dielectric filter according to claim 1, characterized in that:
する特許請求の範囲第１項記載の誘電体フィルタ。(3) The dielectric filter according to claim 1, wherein the organic material is an organic synthetic resin.
徴とする特許請求の範囲第３項記載の誘電体フィルタ。(4) The dielectric filter according to claim 3, wherein the organic synthetic resin is a solder resist.
ることを特徴とする特許請求の範囲第３項記載の誘電体
フィルタ。(5) The dielectric filter according to claim 3, wherein the organic material is a resist containing an epoxy resin.
する特許請求の範囲第５項記載の誘電体フィルタ。(6) The dielectric filter according to claim 5, wherein the resist is a solder resist.
）該誘電体共振器間を容量的に結合する結合手段と、 （ｃ）該結合手段上に設けられる有機材料からなる絶縁
被膜を有することを特徴とする誘電体フィルタ。(7) (a) A plurality of dielectric resonators arranged adjacently, and (b
A dielectric filter comprising: (c) a coupling means for capacitively coupling the dielectric resonators; and (c) an insulating film made of an organic material provided on the coupling means.
する特許請求の範囲第７項記載の誘電体フィルタ。(8) The dielectric filter according to claim 7, wherein the organic material is an organic synthetic resin.
特徴とする特許請求の範囲第８項記載の誘電体フィルタ
。(9) The dielectric filter according to claim 8, wherein the organic synthetic resin is made of solder resist.
あることを特徴とする特許請求の範囲第７項記載の誘電
体フィルタ。(10) The dielectric filter according to claim 7, wherein the organic material is a resist containing an epoxy resin.
とする特許請求の範囲第１０項記載の誘電体フィルタ。(11) The dielectric filter according to claim 10, wherein the resist is a solder resist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10682086 | 1986-05-12 | ||
| JP61-106820 | 1986-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63107201A true JPS63107201A (en) | 1988-05-12 |
Family
ID=14443436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62112436A Pending JPS63107201A (en) | 1986-05-12 | 1987-05-11 | Dielectirc filter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4808951A (en) |
| EP (1) | EP0246042B1 (en) |
| JP (1) | JPS63107201A (en) |
| KR (1) | KR920001453B1 (en) |
| CA (1) | CA1261412A (en) |
| DE (1) | DE3785078T2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0338101A (en) * | 1989-07-04 | 1991-02-19 | Murata Mfg Co Ltd | High frequency coaxial resonator |
| US5122768A (en) * | 1990-01-08 | 1992-06-16 | Nkg Spark Plug Co., Ltd. | Compact stripline filter with fixed capacity between coupled resonator fingers |
| JP2836536B2 (en) * | 1995-08-25 | 1998-12-14 | 松下電器産業株式会社 | Dielectric filter and package mounting the same |
| JP2003332807A (en) * | 2002-05-10 | 2003-11-21 | Murata Mfg Co Ltd | Dielectric filter, dielectric duplexer and communication equipment |
| KR100573807B1 (en) * | 2002-11-19 | 2006-04-25 | (주)파트론 | A dielectric filter, a duplexer dielectric filter and a method of manufacturing the same |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2610172C3 (en) * | 1975-03-12 | 1980-08-21 | Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto (Japan) | Filters based on surface acoustic waves |
| JPS526445A (en) * | 1975-07-07 | 1977-01-18 | Hitachi Ltd | Dielectric resonator |
| JPS5211747A (en) * | 1975-07-18 | 1977-01-28 | Hitachi Ltd | Dielectric resonator |
| JPS54108551A (en) * | 1978-02-14 | 1979-08-25 | Matsushita Electric Ind Co Ltd | Elastic surface wave device |
| JPS5568702A (en) * | 1978-11-20 | 1980-05-23 | Oki Electric Ind Co Ltd | Dielectric filter |
| JPS5657302A (en) * | 1979-10-15 | 1981-05-19 | Murata Mfg Co Ltd | Microwave device using coaxial resonator |
| DE3164402D1 (en) * | 1980-04-28 | 1984-08-02 | Oki Electric Ind Co Ltd | A high frequency filter |
| JPS583301A (en) * | 1981-06-30 | 1983-01-10 | Fujitsu Ltd | Dielectric substance filter |
| JPS5866390A (en) * | 1981-10-15 | 1983-04-20 | 日立化成工業株式会社 | Method of producing printed circuit copper-lined laminated board |
| US4431977A (en) * | 1982-02-16 | 1984-02-14 | Motorola, Inc. | Ceramic bandpass filter |
| US4426631A (en) * | 1982-02-16 | 1984-01-17 | Motorola, Inc. | Ceramic bandstop filter |
| DE3380549D1 (en) * | 1982-05-10 | 1989-10-12 | Oki Electric Ind Co Ltd | A dielectric filter |
| AU558140B2 (en) * | 1982-10-01 | 1987-01-22 | Murata Manufacturing Co. Ltd. | Tm mode dielectric resonator |
| GB2145575A (en) * | 1983-05-25 | 1985-03-27 | British Telecomm | Mounting dielectric resonators |
| US4523162A (en) * | 1983-08-15 | 1985-06-11 | At&T Bell Laboratories | Microwave circuit device and method for fabrication |
| JPS6042903A (en) * | 1983-08-18 | 1985-03-07 | Murata Mfg Co Ltd | Filter using dielectric and its manufacture |
| CA1221750A (en) * | 1983-11-21 | 1987-05-12 | Richard D. Carver | Mounting dielectric resonators |
| DE3413434A1 (en) * | 1984-04-10 | 1985-10-17 | Dielektra GmbH, 5000 Köln | METHOD FOR CONTINUOUSLY PRODUCING COPPER-COATED BASE MATERIAL FOR CIRCUIT BOARDS |
| JPH114902A (en) * | 1997-06-18 | 1999-01-12 | Bunka Shutter Co Ltd | Water mist spraying device for preventing fire from spreading |
-
1987
- 1987-05-01 KR KR1019870004296A patent/KR920001453B1/en not_active IP Right Cessation
- 1987-05-08 DE DE87304122T patent/DE3785078T2/en not_active Expired - Fee Related
- 1987-05-08 EP EP87304122A patent/EP0246042B1/en not_active Expired - Lifetime
- 1987-05-11 JP JP62112436A patent/JPS63107201A/en active Pending
- 1987-05-11 CA CA000536737A patent/CA1261412A/en not_active Expired
- 1987-05-11 US US07/048,633 patent/US4808951A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0246042A3 (en) | 1988-12-14 |
| KR870011717A (en) | 1987-12-26 |
| EP0246042A2 (en) | 1987-11-19 |
| EP0246042B1 (en) | 1993-03-31 |
| DE3785078T2 (en) | 1993-10-28 |
| DE3785078D1 (en) | 1993-05-06 |
| US4808951A (en) | 1989-02-28 |
| KR920001453B1 (en) | 1992-02-14 |
| CA1261412A (en) | 1989-09-26 |
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